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Registered
Join Date: Jul 2005
Location: southern RI USA
Posts: 1,513
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Sealant on intake manifold gaskets?
Hello
Should sealant be used on intake manifold gaskets on either top or bottom? I've got the 12 pack of gaskets sitting in the garage and I want to make sure there are no air leaks upon reassembly. stock (32mm?) manifolds and 40IDAs. If sealant should be used, what kind do you recommend? Something I can get at a local place or what? Thx
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Sepia brown 1971 911T. |
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10-18-2007, 05:46 AM
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Schleprock
Join Date: Sep 2000
Location: Frankfort IL USA
Posts: 16,639
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Use the Permatex copper spray sealant. Others have recommended a GM spec sealant that is non-hardening. This is similar to the green, sticky Curil T goop that many people recommend here.
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Kevin L '86 Carrera "Larry" |
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10-18-2007, 06:08 AM
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Wer bremst verliert
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,767
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This is a "religious" topic, as in people seem to feel strongly about this and are vocal about it. It might be up there with "CIS vs Carbs vs EFI."
Do a search, there are a half-dozen lengthy threads on this topic. FWIW I use Curil T.
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2007 911 Turbo - Not a toy 1985 911 Cab - Wife's toy 1982 911 3.2 Indiash Rot Track Supercharged track toy 1978 911 3.0 Lichtbau toy "Gretchen" 1971 911 Targa S backroad toy |
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10-18-2007, 03:05 PM
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Registered
Join Date: Dec 1999
Location: Novato, CA
Posts: 4,740
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The GM sealant I used on my intakes is known as GMS sealant. Ultra Gray works fine too.
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10-18-2007, 03:47 PM
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Registered
Join Date: Dec 2004
Location: Novato, CA
Posts: 3,064
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Probably a bit of the religious here, but I wouldn't use anything at all; if you have new gaskets you should be fine.
If you use it, you'll be cursing up a blue streak the next time you take the intakes off and you're trying to get everything clean... ianc
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BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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10-18-2007, 06:24 PM
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Registered
Join Date: Dec 1999
Location: Novato, CA
Posts: 4,740
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Come to think of it, I eliminated the problematic gaskests and used sealant alone.
Cheers, Jose' |
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10-20-2007, 01:37 AM
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Registered
Join Date: Oct 2006
Posts: 54
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I use "Yamaha Bond" or generic "Three Bond" as it is called here is Asia. Check your Yamaha dealer.
Oddly enough it is grey and non-hardening. Just bought a tube today to seal up my 915 box for 20 Thai baht which is about 0.80 USD - I suspect the cost in the States will be somewhat higher. Used for sealing engine cases in bikes and the ONLY thing that I have found to seal HD cases.
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robert straghan |
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10-20-2007, 03:51 AM
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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FWIW, I had to R&R the fuel inlet fittings on the Webers several times and didn't have replacement fiber washers that normally crush upon tightening. I used some left-over Loctite 541 (engine case sealant) on both sides of the washer and it seals as well as disassembles easily w/o drama. I let it "set" overnight just to be sure.
If 541 seals in this application (3.5 psi fuel pressure), it's a no-brainer as a sealant for intake manifold and/or carb. base gaskets. Sherwood |
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10-20-2007, 10:23 AM
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